A cordless sander can be very useful for DIY enthusiasts and professionals in various fields. It is a very versatile tool that allows you to achieve high quality results when cutting, sanding and machining thanks to a rotating disc. Another advantage is that it is battery powered. Technology is constantly evolving with new materials and designs for power tools. That is why there are now also cordless tools that give the user more freedom. This also applies to cordless grinders. In this article, we explain everything you need to know about them so you can choose the best model. .

The most important things in everyday life

The best cordless orbital sanders on the market: our pick

Cordless orbital sanders are useful tools for cutting, sanding, grinding and all kinds of home and construction work. That’s why they’re a very popular tool in the world of professionals and DIYers. Here are four of the best models available on the market.

The easiest to use

The Einhell 4431119 is a small but powerful grinder with an additional handle that can be locked in three positions. The diameter of the saw is 115 mm, it reaches a speed of 8500 rpm without a load and the maximum depth of cut is 28 mm. It is an affordable, out-of-the-box product that comes with a sturdy carrying case, a 3.0 Ah Power X-Change battery and a charger.

The best value for money

Makita DGA517Z Akku-Winkelschleifer 18 V mit Paddleschalter (ohne Akku, ohne Ladegerät), Bunt*
Makita DGA517Z Akku-Winkelschleifer 18 V mit Paddleschalter (ohne Akku, ohne Ladegerät), Bunt
Prime  Price: € 153.07
(Show customer reviews)
Jetzt auf Amazon kaufen*
Price incl. VAT., Excl. Shipping

The Makita DGA511Z angle grinder with 18 V battery, which is not included, has a 125 mm diameter blade and variable speed from 3,000 to 8,500 rpm. For the buyer, this is a solid, reliable product with some of the enviable features of corded models at a very reasonable price.

More power

With power ratings of 1,000W and 800W, the DeWalt DCG405 N is one of the most powerful cordless grinders in its class, reviewers were quick to confirm, and it can operate at up to 9,000 rpm. It can handle blades up to 125 mm in diameter and has a net weight of 1.75 kg. It comes with 18-volt rechargeable batteries, which are sold separately. For optimum performance, we recommend using batteries with a capacity of at least 5.0 Ah. .


Weighing just 1.2kg, the Bosch GWS 12V-76 Professional Sander is a compact sander that focuses on lightness and ease of use. It is relatively small and has no additional handle. The blade diameter is 76 mm and the cutting depth is less than 10 mm. It is powered by a 12V battery, which is not included in the price, and allows the disc to reach speeds of up to 19,500 rpm.


The best cordless angle grinders are a combination of conventional angle grinders and radial grinders.

Buying guide angle grinder with battery

Is it worth buying a cordless angle grinder?

Cordless grinders are slightly more expensive than conventional grinders and their performance is slightly lower due to the use of external batteries. So it makes sense to ask whether it is worth buying one. To decide if it’s worth it, you need to consider several factorsThis is why manufacturers are increasingly turning to cordless tools. Grinders are no exception and these portable tools are becoming increasingly common in workshops and construction sites because they are extremely practical and versatile.

Angle grinder or straight grinder?

Straight or angle grinders are a combination of straight grinders and traditional radial grinders. Unlike radial grinders, which are horizontal and portable, the grinding wheel is mounted parallel to the spindle. Straight grinders are usually smaller than angle grinders and also cheaper because the discs are smaller. The main difference is that angle grinders always have the grinding wheel facing downwards, whereas radial grinders have the wheel facing sideways. Angle grinders usually have an extra spindle. . .

. . smerigliatrice-a-batteria-2-768x510

What are the dimensions of a cordless sander?

Condenser sanders usually come in two standard sizes: large sanders and mini sanders. The main difference is the diameter of the blades. Mini grinders, the most common of the cordless grinders, use blades with a diameter of 115-125 mm, while larger grinders use blades with a diameter of 180-230 mm. These are more powerful machines with a range of features that not only cut a variety of materials but also grind metal. These discs can also cut pipes quickly and accurately.

How do you choose a cordless grinding wheel?

The grinding wheels are as important as the grinder itself. The tool’s performance and work safety depend largely on the quality of the grinding wheel. As with all products, the life of the disc depends on how it is used. Before you buy a disc for a cordless sander, pay attention to the speed: it should not exceed the maximum speed specified in the tool’s instructions. Discs that spin faster than the grinder can handle can break and come loose, causing injury. Below you will find a table of recommended disc types for specific tasks:

How to replace a cordless sanding disc

The discs for cordless grinders are very easy to change. More and more models are being developed with an automatic spindle lock and tool-free blade change, which uses a spring-loaded spindle and allows the blade to be changed by simply pressing the integrated safety button:

What are the safety recommendations for cordless sanders?

First of all, we recommend that you never choose a sander that does not have the European CE quality certification. Remember that neither the sander nor the accessories are suitable for all jobs or for sanding all types of materials. Always choose according to your own needs; never use a cordless grinder without a protective shield on the blade. Use an extra handle if possible. If there are people around who could come into contact with the abrasive grit, secure the work area.

How to use a cordless grinder?

The first thing you should think about, as we explained earlier, is safety. Remember that this is a cutting tool that can be prone to accidents. Here are the main tips and recommendations for using cordless bench grinders: ;

Purchasing criteria

Now that you know what paper shredders are and how they work, it’s time to choose the best one for you. However, if you’re not an expert, the choice will be difficult. To help you out, we’ve put together this comprehensive guide to the buying criteria you should look for when buying a cordless shredder:


The principle of a cordless sander is a rotating disc connected to a fast-spinning shaft. It is the speed of rotation at which the tool does its work. For example, if you choose a sander with a low speed, you will have difficulty performing each operation and you risk burning out the motor when working with hard materials. We recommend that you always choose according to your needs. Remember that cordless grinders are not as powerful as electric grinders, so you may not be able to use them for some jobs. Some tools can reach speeds of over 15,000 rpm, others less than 8,000 rpm.


The capacity is responsible for the movement and speed of the disc. Discs are an important part of any cordless sander because they are related to power. The higher the capacity, the more the tool is able to use harder grit to sand or cut coarser materials. Of course, power is also reflected in the price of the grinder. Always choose models between 750W and 1500W: these are the classic tools found in workshops and on construction sites. Models above 1500W are specialised and take less time to achieve professional results, but are also much more expensive.


Accessories are essential for a cordless sander. In addition to the safety accessories described in the previous section, look for models with a battery backup. This allows you to continue working while the other battery is charging, so you never have to stop. Other accessories you should think about are a cutting or sanding disc and a bag or case. For cordless grinders that require a tool to change the disc, the accessories should also include a spanner so you can easily change the disc.


Since this is a cordless model, it is powered by batteries. They must be suitable for the working capacity of the shredder. They must be able to be used for a long time, as some jobs, such as grinding or polishing, often take a long time. To avoid the battery running out during use, many models come with a spare battery. If the model you have chosen does not come with a spare battery as an accessory, it is worth buying one. As far as charging is concerned, we recommend models with quick-charge functions that allow a full charge in less than an hour. .



A cordless sander is the ideal tool for many professionals. Whether you have a machine shop, metal shop, build or work at home, this powerful tool is very useful. Plus, the lack of cords means you can work completely free and move around easily. Before choosing a cordless sander for your home or workshop, it’s worth analysing the market and comparing the different models. In this article, we have helped you choose the best sander by comparing different sanders and explaining the most important buying criteria. The choice is yours.

Leave a Reply

Your email address will not be published. Required fields are marked *